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Hey dude I just had JB4 Stage 3 installed in my X6 N54 and the performance increase on map 2 is amazing! The car literally launches and the engine noise is very aggressive. Love it. The car is completely stock at the moment but I'm looking at upgrading the downpipe and to get cold air intake but I'm still trying to find what fits the car. I am a little worried about engine/turbos and other parts degrading quicker as the power increase is substantial (306hp to 400ish on map 2 with 98 octane). I just put 80000 kilometers and all is well (400km with JB4).
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